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Perl is used extensively as a system programming language in the Debian Linux distribution. [130] Perl is often used as a glue language, tying together systems and interfaces that were not specifically designed to interoperate, and for "data munging", [131] that is, converting or processing large amounts of data for tasks such as creating ...
JavaScript is widely used for web applications and can notably be executed with web browsers. Libraries for AI include TensorFlow.js, Synaptic and Brain.js. [6] Julia is a language launched in 2012, which intends to combine ease of use and performance. It is mostly used for numerical analysis, computational science, and machine learning. [6]
Few languages ever become sufficiently popular that they are used by more than a few people, but professional programmers may use dozens of languages in a career. Most programming languages are not standardized by an international (or national) standard, even widely used ones, such as Perl or Standard ML (despite the name).
#!usr/bin/perl – called the "shebang line", after the hash symbol (#) and ! (bang) at the beginning of the line. It is also known as the interpreter directive. # – the number sign, also called the hash symbol. In Perl, the # indicates the start of a comment. It instructs perl to ignore the rest of the line and not execute it as script code.
(Note that, on Microsoft Windows systems, Perl programs are typically invoked by associating the .pl extension with the Perl interpreter. In order to deal with such circumstances, perl detects the shebang line and parses it for switches. [4]) The second line in the canonical form includes a semicolon, which is used to separate statements in Perl.
Programming Perl, best known as the Camel Book among programmers, [1] is a book about writing programs using the Perl programming language, revised as several editions (1991–2012) to reflect major language changes since Perl version 4.
A mid-November survey by Pew Research found that Americans who identify with or lean toward the GOP felt better about their party's future than they ever have in the Trump era: A whopping 86 ...
Version series 1.7.x is considered to be the most stable (in terms of bugs) version of BioPerl and is recommended for everyday use. In order to take advantage of BioPerl, the user needs a basic understanding of the Perl programming language including an understanding of how to use Perl references, modules, objects, and methods.